[SCIP] No SCIP generated output in GAMS

[Stefan Vigerske]

Hi,

that might be some issue with the GAMS/SCIP interface. GAMS has an 
awkward way in defining what should make it into the status and listing 
file and this might just not be compatible with how SCIP defines its 
output - I think everything just goes to the log only.
If you want to redirect the GAMS log, then use the logoption of GAMS:
http://www.gams.com/help/topic/gams.doc/userguides/userguide/_u_g__gams_call.html#GAMSLogOption

Setting logoption=2 will get the log into a file. You can change the 
name of that file with the logfile option:
http://www.gams.com/help/topic/gams.doc/userguides/userguide/_u_g__gams_call.html#GAMSLogFile

Stefan

On 08/25/2016 11:19 AM, Sascha Kuhnke wrote:
> Hello SCIP team,
>
> I use SCIP within GAMS on Ubuntu 14.04 and activated the GAMS Option
> "Sysout = ON" in order to append the SCIP generated output to the .lst
> file which GAMS generates. However, I just receive the following output
> in the .lst file:
>
> **** SOLVER STATUS FILE LISTED BELOW
> =C
> =CSCIP             24.4.3 r51699 Released Apr  2, 2015 LEG x86 64bit/Linux
> =0SCIP             24.4.3 r51699 Released Apr  2, 2015 LEG x86 64bit/Linux
> SCIP version 3.1 (67d713c)
> Copyright (c) 2002-2015 Konrad-Zuse-Zentrum fuer Informationstechnik
> Berlin (ZIB)
>
> **** SOLVER STATUS FILE LISTED ABOVE
>
> Does anybody know why this doesn't work? If I choose BARON as solver, I
> get the desired output with the same options.
>
> Is there another possibility to get the SCIP output? I call GAMS via
> Python and, therefore, I cannot access the terminal to grab the SCIP
> output from there.
>
> Kind regards,
>
> Sascha Kuhnke
>
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>


-- 
http://www.gams.com/~stefan